I usually use 192.168.0.1, 192.168.0.2, etc. and a subnet
mask of 255.255.255.0 when assigning static IP addresses to computers on
a small Local Area Networks (LANs). If a DHCP server is also on the
LAN it's scope (range of IP addresses that it can assign to computers on
the LAN set to obtain their IP addresses automatically) should be adjusted
so it does not interfere with locally assigned static IP addresses.